Powering and controlling 24 fans

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R

Rukongai

Commendable
May 26, 2016
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I will be doing a build at which I will be installing 24+- fans since there are going to be 4 rads at push pull. It is going to be an extreme build whose purpose is to overclock, game harcorely and at the same time be extremely, extremely quiet. So I was wondering how I could connect all of those fans on something like this: http://www.performance-pcs.com/modmytoys-4-pin-power-distribution-pcb-8-way-block.html#Features and still be able to control their rpm and have them turn on/off when I need them to.

P.S.: I know it's kinda overkill but I'm going to be installing 2 GPU, CPU, RAM and Motherboard waterblocks all in one loop so...Plus, it will look badass!
 
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I'd say so: no need to cut RPM wires from extra fans, extra 12V cable to avoid overloading the motherboard's fan connector, no extra cables or accessories to buy.
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Titan
Moderator
May 18, 2007
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You may want to double-check with the vendor before ordering since many of their "four pins" distribution PCBs show only three on the pictures and link to three pins cables in the accessories. If you want connected fans to be PWM-controlled by the motherboard, you need a distribution bar which has all four pins with PWM signal fan-out and a four pin accessory cable to connect to the motherboard. Instructions on one of the models says you need to cut the RPM signal from all but one fan, which makes me wonder why the designer didn't simply designate one connector as the 'master' with RPM signal and simply leave the RPM signal unconnected on all others or provide a jumper to select the RPM source.
 
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